NSK Linear Guides Interchangeable Series for Industrial Automation Equipment Ball slides and rails are sold separately for maximum convenience and flexibility. A standard stock ensures short delivery time.
• • • • • • • • • •
Five Types Available in Commercial Grade LE Series Miniature - Wide Type LH Series for High Load Capacity Applications LS Series for Compact Low Profile Space Saving Conditions LU Series Miniature Type LW Series Wide Type Interchangeable Rails and Ball Slides Preload and Clearance Types Available Fluoride Black Chrome Plated Rails and Ball Slides Large Inventory for Prompt Delivery
CONTENTS
PAGE
How to Use This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Interchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Identification Numbers – ‘LH’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Accuracy Standard – ‘LH’ Series Load Rating and Life Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Dimensional Tables – ‘LH’ Ball Slides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Dimensional Tables – ‘LH’ Series Rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Accessories – ‘LH’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Identification Numbers – ‘LS’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Accuracy Standard – ‘LS’ Series Load Rating and Life Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Dimensional Tables – ‘LS’ Series Ball Slides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Dimensional Tables – ‘LS’ Series Rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Accessories – ‘LS’ Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Identification Numbers – ‘LU’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Identification Numbers – ‘LE’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Identification Numbers – ‘LW’ Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Assembly and Mounting Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Lubrication & Grease Fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Grease Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Application Sheet – Rail Butting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 K1™ Maintenance-Free Lubrication Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Identification Numbers – K1™ Maintenance-Free Lubrication Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 K1™ Lubrication Units Handling and Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Unit Conversion Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 CAD DRAWING DATA For LE/LH/LS/LU & LW-Series go to NSK technical website www.npa.nsk.com For 3D IGES files on CD-ROM of LH/LS-Series Linear Guides email info@npa.nsk.com Note: CAD DXF drawing files are also available for other linear motion products. Contact NSK.
2
How to Use this Guide Use this guide to select the linear guide ball slides, rails and accessories that you need for your application. Pages 6, 14, 22, 23, 24 and 33 provide identification numbers that you will need to order the components for your application. If you have any uncertainties, or would like more detailed information about any aspect of linear guides, please contact your NSK representative at one of our locations listed on the back cover.
FEATURES Interchangeability of Rail and Ball Slide One important manufacturing feature of the Gothic Arch is the ability to make highly accurate measurements on both the ball slide and rail, allowing for tight tolerance control, resulting in interchangeability. This means that additions and/or replacement of ball slides is easily done. High Load Capacity and Long Life NSK has developed an infinite ball recirculating type linear guide with the largest load capacity available (comparing equal size ball slides). This high load capability helps to ensure long life. Compact Low Profile Type To minimize space, NSK has developed low profile linear guides to handle various applications. Miniature and Miniature Wide Type Stainless Steel If light loads and corrosive conditions are present for your application needs, NSK can supply a miniature and miniature wide type linear guide in stainless steel. NSK’s built-in ball retainer system allows for easy installation and removal of ball slides. Wide Type If your application requires low profile combined with high load, NSK offers the wide series linear guides. Shock Resistant Design Another design feature of the Gothic arch is its ability to absorb vertical shock loads from above using four-row groove configuration. This design is favorable in case of unexpected accidents during installation, or the operation of equipment. The ball groove is designed to avoid edge loading under extreme loads, extending the life of the unit.
DF Arrangement 2 point contact
Normal Load
Shock Load
Normal load is carried on the top two grooves. Shock load is carried by all four grooves.
Universal Slider NSK has incorporated both thru and tapped holes into one flanged slider for a combination of mounting applications. (EM/EMZ replaces EL/ELZ and FL/FLZ • GM/GMZ replaces HL/HLZ and GL/GLZ)
Ability to Butt Rails Tolerance of ball grooves on the ball slides and rails are controlled to allow for butting, giving you the flexibility of unlimited lengths. We can offer a stocked linear guide rail with versatility in assembling preloaded or clearance type ball slides. K1™ Maintenance-Free Lubrication Units NSK has the K1™ Lubrication Units for all five series of interchangeable linear guides. These K1™ Lubrication Units are all available from stock. Maximum Rail Length in One Section Available up to 4,000 mm. Short Delivery Time We can ship from our large inventory, both standard and custom cut-to-length linear rails. Fluoride Low Temperature Chrome Plating NSK has a plating for linear bearings and rails to cover conditions requiring wet, corrosive and clean room applications. NSK also uses industry approved armaloy coating. These are available from stock.
3
Interchange – Linear Guide (LH & LS Series)
Linear Guides are designed for high precision motion and control applications. They provide greater rigidity and higher load capacity than shaft and bushing designs. Some of the industries served - machine tool, robotics, medical and aerospace – require smooth travel and high accuracy. INTERCHANGE
DESCRIPTION
NSK
THK
CARRIAGE PART NUMBER
LAH 1
20 2
RAIL PART NUMBER
L1H 1
20 XXXX 2 4
ASSEMBLY PART NUMBER
AN 3
Z 7
LH 20 XXXX AN 2 PC 1 2 4 3 5 6
Z 7
THOMSON
HSR 1
20 2
HSR 1
20+ XXXXL 2 4
HSR 20 R 1 2 3
2 5
R 3
CG 1
20 2
CE 3
RG 20 N LXXXX 1 2 4
SS C1 +XXXXL P 8 7 4 6
The competitive manufacturers are provided for a convenient source of unit substitution. They can be considered interchangeable in most instances, but for special applications, please consult NSK Engineering. NSK assumes no liability with respect to errors or omissions.
NSK LH LS NSK LH15 LH20 LH25 LH30 LH35 LH45 LH55 LH65 LS15 LS20 LS25 LS30 LS35 NSK LAH##AN LAH##BN LAH##EM LAH##GM
1-Linear Guide Series THK
THOMSON
HSR SR
CG
NSK L1H##XXXX L1S##XXXX
2-Linear Guide Size THK
CG20 CG25 CG30 CG35 CG45 CG55
NSK PC P6 P5 P4 P3 NSK
3-Linear Guide Carriage Styles LH Series THK
THOMSON
HSR##TR/TRX/CR/R HSR##HTR/HR/LR HSR##TA/CA/A HSR##TB/CB/B HSR##HTA/HA/LA HTB/HB/LB
CG##CE CG##DE CGAA CG##BA
THK
THOMSON
HSR##+XXXXL HSR##+XXXXL
RG##NLXXXX
5-Carriages Per Rail Number following carriage style = number of carriages per rail
THOMSON
HSR15 HSR20 HSR25 HSR30 HSR35 HSR45 HSR55 HSR65 SR15 SR20 SR25 SR30 SR35
4-Linear Guide Rail Length mm
T Z 2 3 4 NSK Z
6-Accuracy Class THK
THOMSON
H P SP UP
N H P S U
7-Preload (assemblies only) THK
THOMSON
C1 C1 C0 C0
A B B C C
7-Preload (interchangeable carTHK
THOMSON
C1
B
*THOMSON NOT DIMENSIONALLY EQUIVALENT, MAY NEED SHIM
NSK LAS##FL LAS##AL LAS##KL LAS##CL
LS Series THK THOMSON SR##TB/TBY SR##TX/W/WY SR##SB/SBY SR##SX/V/VY
INTERCHANGE = LAH or LAS FOLLOWED BY SERIES# + CARRIAGE STYLE
4
NSK Standard with side and bottom seals. Double seals and protectors available.
8-Seals THK SS-end/bottom UU-end ZZ-end/bottom/protector DD-double/bottom KK-double/bottom/protector
THOMSON LDS ZZ DD KK
Interchange – Linear Guide (LU, LE & LW Series)
INTERCHANGE
DESCRIPTION
NSK 15 AL 12 AR 17 EL 2 3
LAU LAE LAW 1
CARRIAGE PART NUMBER
L1U L1E L1W 1
RAIL PART NUMBER LU LE ASSEMBLY PART NUMBER 1 LW 1
RSR RSR HRW 1
15 XXXX 12 XXXX 17 XXXX 2 4
15 XXXX AL 2 PC ZT 12 XXXX AR 2 PC ZT 2 4 3 5 6 7 17 XXXX EL 2 PC ZT 2 4 3 5 6 7
THK 15 12 17 2
M W CA 3
CD 1 1
RSR 15 +XXXXL RSR 12W +XXXXL HRW 17 +XXXXL 1 2 4 2 2 5 HRW 1
RSR RSR 1 17 2
15 12 2 CA 3
THOMSON 15 AA 2 3
RD 1
2
3
15 LXXXX 2
4
R UU C1 +XXXXL P W UU C1 +XXXXL P 3 8 7 4 6 2 UU C1 +XXXXL P 5 8 7 4 6
The competitive manufacturers are provided for a convenient source of unit substitution. They can be considered interchangeable in most instances, but for special applications, please consult NSK Engineering. NSK assumes no liability with respect to errors or omissions.
NSK LU LE LW NSK LU05 LU07 LU09 LU12 LU15 LE09 LE12 LE15 LW17 LW21 LW27 LW35 LW50 NSK
1-Linear Guide Series THK
THOMSON
RSR RSR W HRW
CD
NSK
LAW##EL
L1U ## XXXX L1E ## XXXX L1W ## XXXX
2-Linear Guide Size THK
THOMSON
RSR07 RSR09 RSR12 RSR15 RSR09W RSR12W RSR15W HRW17 HRW21 HRW27 HRW35 HRW50
NSK CD10 CD15 CD20
RSR/RSRW##M,KM,WM,WVM RSR/RSRW##VM,M,KM RSR/RSRW##WN,N
THK
PC P6 P5 P4 P3 NSK
3-Linear Guide Carriage Styles LU & LE Series THK
LAU/LAE##AR, AL LAU/LAE##TR, TL LAU/LAE##BL, UL LAU/LAE##CL, SL
NSK
T Z 2 3 4
THOMSON
NSK
CD##AA
Z
LS Series THOMSON
HRW##CA
INTERCHANGE = LAU, LAE, LAW FOLLOWED BY SERIES # + CARRIAGE STYLE
NSK Standard with side and bottom seals. Double seals and protectors available.
4-Linear Guide Rail Length mm THK
THOMSON
RSR##+XXXXL RD##LXXXX RSR##W+XXXXL HRW##+XXXXL 5-Carriages Per Rail Number following carriage style = number of carriages per rail 6-Accuracy Class THK
THOMSON
N H H P P SP S UP U 7-Preload (assemblies only) THK
THOMSON A C1 B C1 B C0 C C0 C 7-Preload (interchangeable carTHK C1
THOMSON B
8-Seals THK THOMSON SS-end/bottom UU-end ZZ-end/bottom/protector DD-double/bottom KK-double/bottom/protector
LDS ZZ DD KK
5
LH Series
Identification Number Ball Slide Ball Slide (Stocked item)
LAH
25 AN
Z-K
Ball Slide Type
No Code: K: K2: D: P:
Size No. AN: AL: BN: BL: EM: GM:
Square - Standard Square - Short height standard Square - Long Square - Short height long Flanged (Tapped & Thru hole) Standard Flanged (Tapped & Thru hole) Long
No special accessories and fluoride black chrome plating One K1™ Lubrication Unit each side Two K1™ Lubrication Units each side Double Seals each side Protector Plate each side
No Code: Clearance Type Z: Preloaded Type
Style Material Code No Code: S: D: H: A: B:
Standard Carbon Steel (May also be C) Stainless Steel (Standard for LU and LE Series) Carbon Steel + Fluoride Coating Stainless Steel + Fluoride Coating Carbon Steel + Armoloy Coating Stainless Steel + Armoloy Coating
Flanged Type
Low Height Type
Square Type
High Type
EM (High Load) GM (Ultra High Load)
With Tapped & Thru Holes
LH-AN (High Load), LH-BN (Ultra High Load)
Fig.-1 LH-AN, LH-BN TYPE
Fig.-2 LH-EM, LH-GM TYPE
Internal Clearance and Preload The internal clearance refers to the amount of movement of the ball slide, when moved up and down with the rail fixed. The amount of preload is specified by size as follows. Table 1
Unit: µm Size
6
#15
Clearance
15 ~–4
Preloaded
0~ – 4
#20 #25
#30 #35 #45
#55 #65
15 ~ – 5 0 ~– 5
0~–7
0~–9
Accuracy Standard
Load Rating and Life
The accuracy standard of the NSK “High Load Capacity LH-Series” is shown in Table 1. With highaccuracy control of individual rail size and interchangeability, the accuracy of Table 1 can be maintained sufficiently even after addition or replacement of the ball slide.
The LH-Series is based on a design applying load from above. Therefore the dimension table shows the basic dynamic load rating C and basic static load rating C0 for the downward direction. If the load is applied laterally or upward refer to values in Table 2.
Table 1
(For Clearance Preload Type)
Tolerances
Model No. LH
Tolerances
(See Fig. 4 for Symbols)
Unit : µm
15, 20, 25, 30, 35 45,55,65
Mounting Height H
±20
±30 20 (1) 35 (2)
15 30 (2) (1)
Variation of Mounting Height H Mounting Width W2 or W2
±30
±30
Variation of Mounting Width W2 or W2
±25
±30
Running Parallelism of Face C to Face A
Refer to Fig. 3
Running Parallelism of Face D to Face B
W2 is applicable to the reference side only. Note: during installation the reference side is indicated by a line provided on the side of ball slide and rail. (See Fig. 4) 1. Variation on the same rail. 2. Variation on multiple rails.
Table 2
Basic Load Rating Correction for Direction
Load Direction
Basic Dynamic Load Rating
Basic Static Load Rating
Downward
C
C0
Upward
C
0.75C0
Laterally
0.88C
0.63C0
Estimate the life of linear guides using the equation below.
Fig.-5
Running Parallelism ( m)
Fig.-3 Running Parallelism 50 40 30 20 10 0
1000
2000
3000
4000
Overall Rail Length (mm)
Fig.-4 Accuracy Standard L = 50
(
where,
C fW•F
)3 L : Rated fatigue life (km) C : Basic dynamic load rating (N) F : Load to a ball slide (N) (Dynamic equivalent load) fW : Load factor fW =1.0 ~ 1.2 (Smooth condition) fW =1.2 ~ 1.5 (Normal condition) fW =1.5 ~ 3.0 (With shock or vibration)
7
LH Series
Ball Slide Dimension Table Square Type LAH-AN/ANZ -AL/ALZ LAH-BN/BNZ -BL/BLZ
Ass’y Dimensions Model No.
H
E
W2
W
B
L
L1
J
J1
K
T
M x pitch x l
LAH15 AN/ANZ LAH15 BN/BNZ
28
4.6
9.5
34
26
55
39
26
6.5
23.4
8
M4 x 0.7 x 6
LAH20 AN/ANZ LAH20 BN/BNZ
30
5
12
44
32
69.8 91.8
50 72
36 50
7 11
25
12
M5 x 0.8 x 6
LAH25 AL/ALZ LAH25 AN/ANZ LAH25 BL/BLZ LAH25 BN/BNZ
36 40 36 40
7
12.5
48
35
79
58
35
11.5
12
107
86
50
18
M6 x 1 x 6 M6 x 1 x 9 M6 x 1 x 6 M6 x 1 x 9
LAH30 AL/ALZ LAH30 AN/ANZ LAH30 BL/BLZ LAH30 BN/BNZ
42 45 42 45
85.6
59
40
9.5
14
124.6
98
60
19
M8 x 1.25 x 8 M8 x 1.25 x 10 M8 x 1.25 x 8 M8 x 1.25 x 10
LAH35 AL/ALZ LAH35 AN/ANZ LAH35 BL/BLZ LAH35 BN/BNZ
48 55 48 55
9.5
109
80
50
15
45.5
15
143
114
72
21
M8 x 1.25 x 8 M8 x 1.25 x 12 M8 x 1.25 x 8 M8 x 1.25 x 8
LAH45 AN/ANZ LAH45 BN/BNZ
70
14
20.5
86
60
139 171
105 137
60 80
22.5 28.5
56
17
M10 x 1.5 x 17
LAH55 AN/ANZ LAH55 BN/BNZ
80
15
23.5
100
75
163 201
126 164
75 95
25.5 34.5
65
18
M12 x 1.75 x 18
LAH65 AN/ANZ LAH65 BN/BNZ
90
16
31.5
126
76
193 253
147 207
70 120
38.5 48.5
74
23
M16 x 2 x 20
9
Note: W1 rail dimensions are on Page 12.
8
Ball Slide Dimensions
16
18
60
70
40
50
33
36
Refer to pages 32 to 34 regarding technical information for the K1™ Maintenance-Free Lubrication Unit
Unit : mm Grease Fitting
Basic Load Ratings Static Moment (N•m) Static C0 (N) MPO MYO MRO
Weight (kg)
Model No.
80 181
0.18 0.33
LAH15 AN/ANZ LAH15 BN/BNZ
185 420
155 355
0.48 0.55
LAH20 AN/ANZ LAH20 BN/BNZ
360
320
267
0.55
71000
555
725
610
0.82
31000
51500
490
350
292
0.77
46000
91500
870
1030
865
1.3
47500
80500
950
755
630
1.5
61500
117000
1380
1530
1280
2.1
LAH35 AL/ALZ LAH35 AN/ANZ LAH35 BL/BLZ LAH35 BN/BNZ
Mounting Hole Thread Spec.
T1
N
Dynamic C (N)
ø3 (thru hole)
8.5
3.3
10800 14600
20700 32000
108 166
95 216
5
11
17400 23500
32500 50500
219 340
25600
46000
34500
M6 x 0.75
M6 x 0.75
M6 x 0.75
M6 x 0.75
10
10
15
11
11
11
LAH25 AL/ALZ LAH25 AN/ANZ LAH25 BL/BLZ LAH25 BN/BNZ LAH30 AL/ALZ LAH30 AN/ANZ LAH30 BL/BLZ LAH30 BN/BNZ
PT1/8
20
13
81000 99000
140000 187000
2140 2860
1740 3000
1460 2520
3 3.9
LAH45 AN/ANZ LAH45 BN/BNZ
PT1/8
21
13
119000 146000
198000 264000
3600 4850
3000 5150
2510 4350
4.7 6.1
LAH55 AN/ANZ LAH55 BN/BNZ
PT1/8
19
13
181000 235000
281000 410000
6150 8950
4950 8950
4150 8450
7.7 10.8
LAH65 AN/ANZ LAH65 BN/BNZ
9
LH Series
Ball Slide Dimension Table Flange Type LAH-EM/EMZ (formerly EL-ELZ-90)
LAH-GM/GMZ
(formerly GL-GLZ-90) 4-Mxl Tapped hole
Note: EM/EMZ and GM/GMZ is a combination of Tapped hole and Thru hole.
Ass’y Dimensions Model No.
Ball Slide Dimensions
H
E
W2
W
BxJ
L
L1
J1
K
T
M x pitch x I
ØQxl
Bolt Size Through Hole Q
LAH15
EM/EMZ GM/GMZ
24
4.6
16
47
38 x 30
55 74
39 58
4.5 14
19.4
8
M5 x 0.8 x 7
Ø4.4 x 8
M4
LAH20
EM/EMZ GM/GMZ
30
5
21.5
63
53 x 40
69.8 91.8
50 72
5 16
25
10
M6 x 1 x 9.5
Ø5.3 x 10
M5
LAH25
EM/EMZ GM/GMZ
36
7
23.5
70
57 x 45
79 107
58 86
6.5 20.5
29
11
M8 x 1.25 x 10
Ø6.8 x 10
M6
LAH30
EM/EMZ GM/GMZ
42
9
31
90
72 x 52
98.6 124.6
72 98
10 23
33
11
M10 x 1.5 x 12
Ø8.6 x 12
M8
LAH35
EM/EMZ GM/GMZ
48
9.5
33
100
82 x 62
109 143
80 114
9 26
38.5
12
M10 x 1.5 x 13
Ø8.6 x 13
M8
LAH45
EM/EMZ GM/GMZ
60
14
37.5
120
100 x 80
139 171
105 137
12.5 28.5
46
13
M12 x 1.75 x 15
Ø10.5 x 15
M10
LAH55
EM/EMZ GM/GMZ
70
15
43.5
140
116 x 95
163 201
126 164
15.5 34.5
55
15
M14 x 2 x 18
Ø12.5 x 18
M12
LAH65
EM/EMZ GM/GMZ
90
16
53.5
170
142 x 110
193 253
147 207
18.5 48.5
74
23
M16 x 2 x 24
Ø14.6 x 24
M14
Note: W1 rail dimensions are on Page 12.
(EM/EMZ replaces EL/ELZ and FL/FLZ • GM/GMZ replaces HL/HLZ and GL/GLZ)
10
Refer to pages 32 to 34 regarding technical information for the K1™ Maintenance-Free Lubrication Unit
Unit : mm Grease Fitting
Basic Load Ratings Static Moment (N•m) Static C0 (N) MPO MYO MRO
Weight (kg)
Model No.
Mounting Hole Thread Spec.
T1
N
Dynamic C (N)
Ø3 (thru hole)
4.5
3.3
10800 14600
20700 32000
108 166
95 216
80 181
0.17 0.25
LAH15
EM/EMZ GM/GMZ
M6 x 0.75
5
11
17400 23500
32500 50500
219 340
185 420
155 355
0.45 0.65
LAH20
EM/EMZ GM/GMZ
M6 x 0.75
6
11
25600 34500
46000 71000
360 555
320 725
267 610
0.63 0.93
LAH25
EM/EMZ GM/GMZ
M6 x 0.75
7
11
35500 46000
63000 91500
600 870
350 1030
292 865
1.2 1.6
LAH30
EM/EMZ GM/GMZ
M6 x 0.75
8
11.5
47500 61500
80500 117000
950 1380
755 1530
630 1280
1.7 2.4
LAH35
EM/EMZ GM/GMZ
PT1/8
10
13
81000 99000
140000 187000
2140 2860
1740 3000
1460 2520
3 3.9
LAH45
EM/EMZ GM/GMZ
PT1/8
11
13
119000 146000
198000 264000
3600 4850
3000 5150
2510 4350
5 6.5
LAH55
EM/EMZ GM/GMZ
PT1/8
19
13
181000 235000
281000 410000
6150 8950
4950 10100
4150 8450
10 14.1
LAH65
EM/EMZ GM/GMZ
11
LH Series
Rail Dimension Table Separately Sold Rail for NSK Linear Guide LH Series Standard Rail L1H-Z : Preloaded Interchangeable Type LH Series Butting Rail L1H-01Z : Preloaded Interchangeable Type LH Series butting rail features higher precision tolerances for L0 and G dimensions.
L1H 25
1200 - 01
Z No Code: Clearance Type Z: Preloaded Type
Rail Type
Material Code No Code: Standard Carbon Steel S: Stainless Steel (Standard for LU and LE Series) D: Carbon Steel + Fluoride Coating H: Stainless Steel + Fluoride Coating A: Carbon Steel + Armoloy Coating B: Stainless Steel + Armoloy Coating F: Fluoride Black Chrome Plating
Size No. Rail Length (mm) No Code: Standard 01: Butting Rail
Rail Dimensions Table Model No. Standard Butting
12
1 mm = .0394 inch 1kgf/m = .67 Ft/Lb
Unit: mm
Max. rail length L 0 max. ( ) indicates Stainless Steel
W1
H1
F
dxDxh
Rail Rail Weight 0 Butting G-0.5 (kg/m)
L1H15 L1H15-Z
L1H15-01 L1H15-01Z
1440 (1260)
15
15
60
4.5 x 7.5 x 5.3
30
1.6
L1H20 L1H20-Z
L1H20-01 L1H20-01Z
3960 (3460)
20
18
60
6 x 9.5 x 8.5
30
2.6
L1H25 L1H25-Z
L1H25-01 L1H25-01Z
3960 (3460)
23
22
60
7 x 11 x 9
30
3.6
L1H30 L1H30-Z
L1H30-01 L1H30-01Z
4000 (3480)
28
26
80
9 x 14 x 12
40
5.2
L1H35 L1H35-Z
L1H35-01 L1H35-01Z
4000
34
29
80
9 x 14 x 12
40
7.2
L1H45 L1H45-Z
L1H45-01 L1H45-01Z
3990
45
38
105
14 x 20 x 17
52.5
12.3
L1H55 L1H55-Z
L1H55-01 L1H55-01Z
3960
53
44
120
16 x 23 x 20
60
16.9
L1H65 L1H65-Z
L1H65-01 L1H65-01Z
3900
63
53
150
18 x 26 x 22
75
24.3
LH Series Accessories Protector and Double Seal Travel length is reduced by the thickness of the end seal on the ball slide. Consider the value of V in the table below when calculating the travel length. Protector Seal
Unit : mm
Linear Guide Protector No. Protector No. Increased Model No. Plug End Grease Fitting End Thickness V1
Double Seal
Unit : mm
Linear Guide Double Seal No. Double Seal No. Increased Plug End Grease Fitting End Thickness V2 Model No.
LH15
LH15PT-01
LH15PTC-01
2.7
LH15
LH15WS-01
LH15WSC-01
2.5
LH20
LH20PT-01
LH20PTC-01
2.9
LH20
LH20WS-01
LH20WSC-01
2.5
LH25
LH25PT-01
LH25PTC-01
3.2
LH25
LH25WS-01
LH25WSC-01
2.8
LH30
LH30PT-01
LH30PTC-01
4.2
LH30
LH30WS-01
LH30WSC-01
3.6
LH35
LH35PT-01
LH35PTC-01
4.2
LH35
LH35WS-01
LH35WSC-01
3.6
LH45
LH45PT-01
LH45PTC-01
4.9
LH45
LH45WS-01
LH45WSC-01
4.3
LH55
LH55PT-01
LH55PTC-01
4.9
LH55
LH55WS-01
LH55WSC-01
4.3
LH65
LH65PT-01
LH65PTC-01
5.5
LH65
LH65WS-01
LH65WSC-01
4.9
One of each PT and PTC is required to do one linear bearing.
One of each WS and WSC is required to do one linear bearing.
Fig.-8 Protector and Double Seal Protector (made of steel) End Seal
Double Seal (2 end seals)
Fig.-13
NOTE: V1 includes the thickness of the screw head.
Adapters These parts connect piping to the tapped hole when the grease fitting is removed.
Fig.-6 LF Type For LH20, 25 For LH30, 35
Fig.-7 SF Type For LH20, 25 For LH30, 35
*NOTE: The protector (steel) is always ahead of the side seal or double seal. Plastic Cap for Rail Mounting Hole Linear Guide Model No.
Rail Mounting Bolt Size
Cap. No. for Rail Mounting Hole
LH15 LH20 LH25 LH30 LH35 LH45 LH55 LH65
M4 M5 M6
L45800004-003 L45800005-003 L45800006-003
M8
L45800008-003
M12 M14 M16
L45800012-003 L45800014-003 L45800016-003
Brass Cap for Rail Mounting Hole Linear Guide Model No.
Rail Mounting Bolt Size
Cap. No. for Rail Mounting Hole
LH20 LH25 LH30 LH35 LH45
M5 M6
L45800005-004 L45800006-004
M8
L45800008-004
M12
L45800012-004
13
LS Series
Identification Number Refer to the following numbering system when ordering.
Ball Slide (Stocked item)
LAS 25
AL
S
Z
No Code - No special accessories and fluoride chome plating K: One K1™ Lubrication Unit each side K2: Two K1™ Lubrication Units each side D: Double seals each side P: Protector plate each side
Ball Slide Size No. Ball Slide Shape Code AL: CL: KL: EL: FL:
K
Preload Z: Preload Type No Code: Clearance Type
Square Type (4 Tapped holes) - High load Square Type (2 Tapped holes) - Medium load Flanged Type (2 Thru holes) - Medium load Flanged Type (4 Tapped holes) - High load Flanged Type (4 Thru holes) - High load
Material Code No Code: Carbon Steel S: Stainless Steel D: Carbon Steel Fluoride Coating H: Stainless Steel Fluoride Coating A: Carbon Steel + Armoloy Coating B: Stainless Steel + Armoloy Coating
LS-EL (High Load) with 4 Tapped Holes LS-FL (High Load) with 4 Thru Holes LS-KL (Medium Load) with 2 Thru Holes LS-AL (High Load) with 4 Tapped Holes Square Type LS-CL (Medium Load) with 2 Tapped Holes Both types have stainless steel series. Flanged Type
Fig.-1 LS-AL, LS-CL
Fig.-2 LS-EL, LS-FL, LS-KL
Radial Clearance and Preload The clearance when interchangeable rail and ball slide components are combined is as listed in Table 2. Minus symbol indicates the preload. Table 2 Clearance of Interchangeable Linear Guide Model No.
Clearance
Light Preload Z
LS15
15 ~ – 4
0~– 4
LS20
15 ~ –4
0~– 4
LS25
15 ~ –5
0~– 5
LS30
15 ~ –5
0~– 5
LS35
15 ~ –5
0~– 6
*Consult NSK for price and delivery.
14
Unit: µm
Accuracy Standard
Load Rating and Life
The accuracy standard of the NSK “Compact Low Profile LS-Series” is shown in Table 1. With highaccuracy control of individual rail size and interchangeability, the accuracy of Table 1 can be maintained sufficiently even after addition or replacement of the ball slide.
The LS-Series is based on a design applying load from above. Therefore the dimension table shows the basic dynamic load rating C and basic static load rating C0 for the downward direction. If the load is applied laterally or upward refer to values in Table 2.
Table 1 Tolerances
Unit : µm
Tolerances
(See Fig. 4 for Symbols)
15, 20, 25, 30, 35
Mounting Height H
±20
Variation of Mounting Height Mounting Width W2 or W3
15 (1) 30 (2) ±30
Variation of Mounting Width W2 or W2
±30
Running Parallelism of Face C to Face A
Load Direction
Basic Dynamic Load Rating
Basic Static Load Rating
Downward
C
C0
Upward
C
0.75C0
Laterally
0.88C
0.63C0
Refer to Fig. 3
Running Parallelism of Face D to Face B
W2 is applicable to the reference side only. Note: during installation the reference side is indicated by a line provided on the side of ball slide and rail. (See Fig. 4) 1. Variation on the same rail. 2. Variation on multiple rails.
Estimate the life of linear guides using the equation below.
Fig.-5
Fig.-3 Running Parallelism Running Parallelism ( m)
Table 2 Basic Load Rating Correction for Direction
Model No. LS
50 40 30 20 10 0
1000
2000
3000
4000
Overall Rail Length (mm)
Fig.-4 Accuracy Standard
(
C
L = 50 f •F W where,
)
3
L : Rated fatigue life (km) C : Basic dynamic load rating (N) F : Load to a ball slide (N) (Dynamic equivalent load) fW : Load factor fW =1.0 ~ 1.2 (Smooth condition) fW =1.2 ~ 1.5 (Normal condition) fW =1.5 ~ 3.0 (With shock or vibration)
15
LS Series
Ball Slide Dimension Table Square Type LAS-CL (Z) : Standard Steel LAS-AL (Z) : LAS-CLS (Z) : Stainless Steel LAS-ALS (Z) : Note: Consult NSK for price and delivery on stainless steel.
Ass’y Dimensions Model No.
H
E
W2
W
B
L
L1
J
J1
K
T
M x pitch x I
LAS15 CL/CLZ LAS15 AL/ALZ
24
4.6
9.5
34
26
40.4 56.8
23.6 .. 40
–– 26
11.8 .. 7
19.4
10
M4 x 0.7 x 6
LAS20 CL/CLZ LAS20 AL/ALZ
28
6..
11..
42
32
47.2 65.2
.. 30 .. 48
–– 32
15 .. 8
22..
12
M5 x 0.8 x 7
LAS25 CL/CLZ LAS25 AL/ALZ
33
7..
12.5
48
35
59.6 81.6
.. 38 .. 60
–– 35
.. 19 12.5
26..
12
M6 x 1 x 9
LAS30 CL/CLZ LAS30 AL/ALZ
42
9..
16..
60
40
67.4 96.4
.. 42 .. 71
–– 40
.. 21 15.5
33..
13
M8 x 1.25 x 12
LAS35 CL/CLZ LAS35 AL/ALZ
48
10.5
18..
70
50
.. 77 108
.. 49 .. 80
–– 50
24.5 .. 15
37.5
14
M8 x 1.25 x 12
Note: W1 rail dimensions are on Page 20.
16
Ball Slide Dimensions
Refer to pages 32 to 34 regarding technical information for the K1™ Maintenance-Free Lubrication Unit
LAS-CL/CLZ
LAS-AL/ALZ
Unit : mm Grease Fitting
Basic Load Ratings Static Moment (N•m) Static C0 (N) MPO MYO MRO
Weight (kg)
Model No.
21 65
0.14 0.20
LAS15 CL/CLZ LAS15 AL/ALZ
47 133
39 111
0.19 0.28
LAS20 CL/CLZ LAS20 AL/ALZ
164 286
91 258
76 217
0.34 0.51
LAS25 CL/CLZ LAS25 AL/ALZ
29600 55000
282 520
139 435
116 365
0.58 0.85
LAS30 CL/CLZ LAS30 AL/ALZ
40000 74500
465 865
220 695
185 580
0.86 1.25
LAS35 CL/CLZ LAS35 AL/ALZ
Mounting Hole Thread Spec.
T1
N
Dynamic C (N)
Ø3 (Thru Hole)
6..
3
5400 8350
9100 16900
46 85
25 77
M6 x 0.75
5.5
11
7900 11700
13400 23500
92 160
M6 x 0.75
7..
11
12700 18800
20800 36500
M6 x 0.75
8..
11
18700 28800
M6 x 0.75
8.5
11
26000 40000
17
LS Series
Ball Slide Dimension Table Flange Type LAS-KL (Z) : Standard Steel LAS-FL (Z) : LAS-EL (Z) : LAS-KLS (Z) : Stainless Steel LAS-KLS (Z) : Note: Consult NSK for price and delivery on stainless steel.
4 - Mx l Tapped hole
4 - ø Q x l Thru hole (for KL, FL type)
(for EL type)
Ass’y Dimensions Model No.
H
E
W2
W
BxJ
L
L1
J1
K
T
Qxl
LAS15 KL/KLZ LAS15 FL/FLZ LAS15 EL/ELZ
24
4.6
18.5
52
41 x 26 41 x 26 41 x 26
40.4 56.8 56.8
23.6 40.0 40.0
11.8 7.0 7.0
19.4
8
4.5 x 7 4.5 x 7
LAS20 KL/KLZ LAS20 FL/FLZ LAS20 EL/ELZ
28
59
49 x 32 49 x 32 49 x 32
47.2 65.2 65.2
30.0 48.0 48.0
15.0 8.0 8.0
22.0
73
60 x 35 60 x 35 60 x 35
59.6 81.6 81.6
38.0 60.0 60.0
19.5 12.5 12.5
26.0
90
72 x 40 72 x 40 72 x 40
67.4 96.4 96.4
42.0 71.0 71.0
21.5 15.5 15.5
33.5
100
80 x 50 82 x 50 82 x 50
77.4 108.0 108.0
49.0 80.0 80.0
24.5 15.0 15.0
LAS25 KL/KLZ LAS25 FL/FLZ LAS25 EL/ELZ
33
LAS30 KL/KLZ LAS30 FL/FLZ LAS30 EL/ELZ
42
LAS35 KL/KLZ LAS35 FL/FLZ LAS35 EL/ELZ
48
6.0
7.0
9.5
10.5
19.5
25.5
31.0
33.0
Note: W1 rail dimensions are on Page 20.
18
Ball Slide Dimensions M x pitch x l
Bolt Size Thru Hole Q M4 M4
M5 x 0.8 x 8 10
5.5 x 9 5.5 x 9
11
7 x 10 7 x 10
M5 M5 M6 x 1 x 9 M6 M6 M8 x 1.25 x 12
11
9 x 12 9 x 12
12
9 x 13 9 x 13
M8 M8 M10 x 1.5 x 12
37.5
M8 M8 M10 x 1.5 x 12
LS Series
Refer to pages 32 to 34 regarding technical information for the K1™ Maintenance-Free Lubrication Unit
LAS-KL/KLZ
LAS-FL/FLZ LAS-EL/ELZ
Unit : mm Grease Fitting Mounting Hole Thread Spec.
N
6.0
3
5400 8350 8350
9100 16900 16900
46 85 85
25 77 77
21 65 65
0.17 0.26 0.26
LAS15 KL/KLZ LAS15 FL/FLZ LAS15 EL/ELZ
M6x0.75
5.5
11
7900 11700 11700
13400 23500 23500
92 160 160
47 133 133
39 111 111
0.24 0.35 0.35
LAS20 KL/KLZ LAS20 FL/FLZ LAS20 EL/ELZ
M6x0.75
7.0
11
12700 18800 18800
20800 36500 36500
164 286 286
91 258 258
76 217 217
0.44 0.66 0.66
LAS25 KL/KLZ LAS25 FL/FLZ LAS30 EL/ELZ
M6x0.75
8.0
11
18700 28800 28800
29600 55000 55000
282 520 520
139 435 435
116 365 365
0.76 1.2 1.2
LAS30 KL/KLZ LAS30 FL/FLZ LAS30 EL/ELZ
M6x0.75
8.5
11
26000 40000 40000
40000 74500 74500
465 865 865
220 695 695
185 580 580
1.2 1.7 1.7
LAS35 KL/KLZ LAS35 FL/FLZ LAS35 EL/ELZ
Ø3 (Thru Hole)
Dynamic C (N)
Basic Load Ratings Static Static Moment (N•m) C0 (N) MRO MPO MYO
T1
Weight (kg)
Model No.
19
LS Series
Rail Dimension Table Separately Sold Rail for NSK Linear Guide LS Series Standard Rail L1S : Clearance Interchangeable Type L1S-Z : Preloaded Interchangeable Type Identification Number Rail
L1S 25 3960 -01 T S Z Preload Code Z: Light preload No Code: Clearance type
Type Slide Size No.
Material Code No Code: Carbon Steel S: Stainless Steel D: Carbon Steel + Fluoride Coating H: Stainless Steel + Fluoride Coating A: Carbon Steel + Armoloy Coating B: Stainless Steel + Armoloy Coating
Rail Length (mm) No Code: Standard -01: Butted Rail For L1S15 Rail Size Only: No Code: Counterbore hole in rail for M3 T: Counterbore hole in rail for M4
Unit : mm Rail Dimensions Width W1
Height H1
Pitch F
Bolt Hole dxDxH
Rail Butting G
Rail Standard G
Max.Rail Length L0 ( ) indicates Stainless Steel
Weight Rail (kg/m)
L1S15
15
12.5
60
3.5 x 6 x 4.5
30
20
1660 (1000)
1.4
L1S15T
15
12.5
60
4.5 x 7.5 x 5.3
30
20
1660 (1000)
1.4
L1S20
20
15.5
60
6 x 9.5 x 8.5
30
20
3960 (3400)
2.3
L1S25
23
18.5
60
7 x 11 x 9
30
20
3960 (3400)
3.1
L1S30
28
23.5
80
7 x 11 x 9
40
20
4000 (3400)
4.8
L1S35
34
27.5
80
9 x 14 x 12
40
20
4000 (3400)
7.0
Model No.
20
LS Series Accessories Protector and Double Seal Travel length is reduced by the thickness of the end seal on the ball slide. Consider the value of V in the table below when calculating the travel length. Protector Seal Linear Guide Protector No. Protector No. Model No. Plug End Grease Fitting End
Unit : mm Increased Thickness V1
Double Seal Unit : mm Linear Guide Double Seal No. Double Seal No. Increased Model No. Plug End Grease Fitting End Thickness V2
LS15
LS15PT-01
LS15PTC-01
3.0.0
LS15
LS15WS-01
LS15WSC-01
2.8
LS20
LS20PT-01
LS20PTC-01
2.7
LS20
LS20WS-01
LS20WSC-01
2.5
3.2
LS25
LS25WS-01
LS25WSC-01
2.8
LS30
LS30WS-01
LS30WSC-01
3.6
LS35
LS35WS-01
LS35WSC-01
3.6
LS25
LS25PT-01
LS25PTC-01
LS30
LS30PT-01
LS30PTC-01
4.2
LS35
LS35PT-01
LS35PTC-01
4.2
One of each WS and WSC is required to do one linear bearing.
One of each PT and PTC is required to do one linear bearing.
Fig.-7 Protector and Double Seal Protector (made of steel) End Seal
Fig.-13
Double Seal (2 end seals)
Note: V1 includes the thickness of the screw head.
*Note: The protector (steel) is always ahead of the side or double seal.
Adapter These parts connect piping to the tapped hole when the grease fitting is removed.
Fig.-5 LF Type
Adapter No. L80206021-301
For LS20, 25 For LS30, 35
Fig.-6 SF Type For LS20, 25 For LS30, 35
Table 12 Cap for Rail Mounting Hole Linear Guide Rail Mounting Cap. No. for Rail Model No. Bolt Size Mounting Hole LS15 LS20 LS25 LS30 LS35
Adapter No. L80106021-301
M3 M5
L45800003-003 L45800005-003
M6
L45800006-003
M8
L45800008-003
Brass Cap for Rail Mounting Hole Linear Guide Rail Mounting Cap. No. for Rail Model No. Bolt Size Mounting Hole LS20 LS25 LS30 LS35
M5
L45800005-004
M6
L45800006-004
M8
L45800008-004
21
LU Series
Identification Number Refer to the following numbering system when ordering. Ball Slide (Stocked item)
Rail (Stocked item)
LAU 12 AR S
L1U 12 0120 T S No Code: Clearance Type S: Stainless Steel
S: Stainless Steel, No Code: Standard T: Bolt Hole Large, No Code: Standard
AR: Square TR: Square (Large Tapped Hole)
Rail Length (mm) Size No.
Size No.
Interchangeable Ball Slide Type
Rail Type
Ball Slide
LU Series Ball Slide Dimension Ass’y Dimension Model No. Height H E
B
J
15
13 10
M2 x 0.4 x 2.5 M3 x 0.5 x 3
27 35.2
20
15
M2.5 x 0.45 x 3 3.5 21.8 M3 x 0.5 x 3.5
32 43.6
25
20
Width Length W2 W
LAU09ARS LAU09TRS
10
LAU12ARS LAU12TRS
13
3
7.5
LAU15ALS
16
4
8.5
2.2 5.5
Unit: mm Basic Load Rating
Ball Slide Dimensions Tapped Hole Thread M x pitch x l B1 L1
20
L 30
M3 x 0.5 x 4
2.5
3.5
20
27
Dynamic Static Static Moment (N•m) C C0 Weight (N) (N) MRO MPO MYO (g)
J1
K
3.5 5.5
7.8
1490 2150
10 10
6 6
6 6
19
3.4
10
2830 3500
21 21
11 11
11 11
38
3.5
12
5550 6600
50
26
26
70
Rail
LU Series Rail Dimension Model No
Standard Length (in stock)
L1U09*S 115 L1U09*TS
195
275
L1U12*S 170 L1U12*TS
270
470
230
430
670
L1U15*S *Stainless Steel
22
Unit: mm Rail Dimension Width W1
Length H1
Bolt pitch F
9
5.5
800
12
990
15
Rail length L0 max Weight ( ) indicates Stainless Steel (g/100mm)
Bolt hole dxDxh
G (Standard)
20
2.6 x 4.5 x 3 3.5 x 6 x 4.5
7.5
275 (600)
35
7.5
25
3 x 5.5 x 3.5 3.5 x 6 x 4.5
10
470 (470)
65
9.5
40
3.5 x 6 x 4.5
15
990 (990)
105
LE Series
Identification Number Refer to the following numbering system when ordering. Ball Slide (Stocked item)
Rail (Stocked item)
LAE 12 AR S
L1E 12 0120
S
No Code: Clearance Type S: Stainless Steel
S: Stainless Steel
AR: Square TR: Square (Large Tapped hole)
Rail Length (mm)
Size No.
Size No.
Interchangeable Ball Slide Type
Rail Type
Ball Slide
LE Series Ball Slide Dimension
Unit: mm
Ass’y Dimension Model No. Height H
Width Length
E
W2 W
L
B
J
LAE09ARS 12 LAE09TRS
4
6
30 39.8 21 12
LAE12ARS 14
4
8
40
LAE15ARS 16
4
9
60 56.6 45 20
45
28 15
Ball Slide Dimensions Tapped Hole Thread M x pitch x l B1 L1
J1
Basic Load Rating Dynamic Static Static Moment (N•m) Weight C C0 K (N) (N) MRO MPO MYO (g)
27.6
7.8
8
3000 4500
37 37
17 17
17 17
40
6.0
31
8
10
4350 6350
71
29
29
75
7.5
38.4
9.2
12
7600 10400
207
25
59
150
M2.6 x 0.45 x 3 M3 x 0.5 x 3
4.5
M3 x 0.5 x 4 M4 x 0.7 x 4.5
Rail
LE Series Rail Dimension
Unit: mm Rail Dimension
Model No.
Standard Length (in stock)
Bolt Width Length pitch W1 H1 F
B2
B3
Bolt hole dxDxh
G hole (Standard)
Rail length L0 max
Weight (g/100mm)
L1E09*S
110
200
290
380
18
7.5
30
–
9.5
3.5 x 6 x 4.5
10
380
95
L1E12*S
150
310
470
790
24
8.5
40
–
12.5
4.5 x 8 x 4.5
15
790
140
L1E15*S
230
430
670
990
42
9.5
40
23
9.5
4.5 x 8 x 4.5
15
990
275
*Stainless Steel
23
LW Series
Identification Number Refer to the following numbering system when ordering. Ball Slide (Stocked item)
Rail (Stocked item)
L AW 2 7 E L Z
L1W 27 0820
Z
Z : Light Preload No Code : Clearance
Z: Light Preload No Code : Clearance
EL: Flanged (Tapped hole)
Rail Length (mm)
Size No.
Size No.
Interchangeable Ball Slide Type
Rail Type
Ball Slide
LW Series Ball Slide Dimension Assembly Dimension Model No. LAW17EL/ELZ
Ball Slide Dimensions
Tapped Hole Height Width Length Thread H E W2 W L B x J M xpitch x I T1 17
2.5 13.5 60
51.4 53 x 26
M4 x 0.7 x 6
3.2
Q
L1
J1
3.3
35
4.5 14.5
K
T
Unit: mm Basic Load Rating Grease fitting Static Moment Weight (kg) Dynamic Static (N•m) Thread T1 N C(N) C0(N) MRO MPO MYO
6
ø3 thru hole
4
3
5600
11300
113
44
37
0.2
LAW21EL/ELZ
21
3
15.5 68
58.8 60 x 29
M5 x 0.8 x 8
3.7
4.4
41
6
18
8
M6 x 0.75
4.5 11 6450
13900
185
66
55
0.3
LAW27EL/ELZ
27
4
19
74
M6 x 1 x 10
6
5.3
56
8
23
10
M6 x 0.75
6
11 12800 26900
400
171
143
0.5
LAW35EL/ELZ
35
4
108 107 x 60 M8 x 1.25 x 14 8
6.8
84
12
31
14
M6 x 0.75
8
11 33000 66500
1690
645
545
1.5
LAW50EL/ELZ
50
4.5
PT 1/8
14
14 61500 117000 3900
1530 1280
4.0
80
25.5 120 36
70 x 40
162 140.6 144 x 80 M10 x 1.5 x 18 14
8.6 108 14 45.5 18
Rail
LW Series Rail Dimension
Unit: mm Rail Dimension
Standard Length (in stock)
Model No.
24
L1W17
430
670
990
L1W21
430
680
980
L1W27
460
640
820
Width Height W1 H1
1000
Bolt pitch F
B1
Bolt hole dxDxh
G (Standard)
Rail length L0 max
Weight (kg/m)
15
990
2.1
33
8.7
40
18
4.5 x 7.5 x 5.3
37
10.5
50
22
4.5 x 7.5 x 5.3
15
980
2.9
42
15
60
24
4.5 x 7.5 x 5.3
20
2000
4.7
L1W35
440
600
760
1000
1240
69
19
80
40
7 x 11 x 9
20
2000
9.6
L1W50
440
600
760
1000
1240
90
24
80
60
9 x 14 x 12
20
1240
15.8
Assembly
Mounting Procedure
Interchangeable ball slides are shipped on (disposable) plastic provisional rails as shown in Fig.-9. 1. Wipe off anticorrosive oil from the rail. 2. Since Alvania (AS2) grease is packed in the ball slide, you can use it as delivered. 3. Align the rail with bottom and side faces of provisional rail and while pushing the provisional rail lightly against the rail, slide the ball slide on to the rail (Fig.-9).
For cases where datum surface exists on the bed
Fig.-9 Assembly of Ball Slide with Rail
1. Lightly tighten the rail mounting bolts and then use the shoulder plate to secure rail datum surface against bed mounting surface (See Fig. 12). 2. Tighten rail mounting bolts to their recommended torques (Table 7). Tighten the bolts in an order which enables the wrench to help push the rail against the mounting surface (see Fig. 13 for example).
Fig.-12 Positioning of Rail
Table 7
Recommended Torque for Rail Mounting Bolt (case of thermally refined bolt) Unit: kgf•cm Bolt Nominal No. Torque Bolt Nominal No. Torque
Mounting Method Shoulder Height and Corner Shape at Mounting Face When utilizing the reference surface to secure rail or ball slides to machine components the components must have the mounting face height (H', H") and corner chamfer (r) dimensions as listed in Table 6 and illustrated in Figs. 10 and 11, to avoid interference. Table 6
Shoulder height and corner shape at mounting face (LH, LS Series)
Product No. Radius of corner r (max.) 15 20 25 30 35 45 55 65
0.5 0.5 0.5 0.5 0.5 0.7 0.7 1.0
Fig.-10 Rail Datum Face Mounting Part
Unit : mm
Shoulder Height Shoulder Height of Rail H' of Ball Slide H" 4.0 4.5 5.0 6.0 6.0 8. 10.0 11.0
4.5 5.0 5.0 6.0 6.0 8.0 10.0 11.0
Fig.-11 Ball Slide Datum Face Mounting Part
M3 M4 M5 M6 M8
10.8 25.0 52.0 88.0 220.0
M10 440 M12 770 M14 1240 M16 2000 [1 kg•cm=0.8681 Lb in]
Fig.-13 Tightening Direction
3. Mount the adjust side rail, as shown in Fig.-14, while checking rail parallelism. For the jig shown in Fig.-14, stability will be improved by mounting it on 2 ball slide.
Fig.-14 Parallelism Measurement with Jigs
4. If dowel pins are being used they should be installed at this step. 5. Position the ball slides at specified intervals and mount the table gently. 6. Tighten ball slide mounting bolts of datum side while pushing the table so that the table and ball slide mounting reference surfaces are in contact.
25
Indication of Installed Standard Side The datum face of each rail is indicated by a groove in the datum face or by an arrow mark on the end or top surface of the rail.
Lubrication Grease Lubrication NSK linear guides are packed with Alvania 2 grease and can be used as delivered. The replenishment frequency is recommended to be once a year, but adjust the interval depending on the operation conditions.
(1) To Change Direction of Grease Fitting 1. Remove the grease fitting with a wrench. 2. Wind some sealing tape on the thread of the fitting, then insert it and tighten. Be careful not to over torque when tightening into the side of the plastic bearing end cap.
Notes on Usage Separately packaged ball slide is mounted on a plastic temporary axis (disposable) as shown at left. 1. Wipe anti-rust oil from the rail. 2. Product is ready for use as is since Alvania 2 grease is sealed inside the ball slide. 3. Note the groove mark which identifies the datum faces of ball slide and rail above. 4. Move the ball slide, matching and slightly pushing the base and the side of provisional rail to the rail as in drawing at left.
(2) Change of Fitting Position in Front/Back Direction 1. Remove the plug from the grease fitting mounting hole face B shown in Fig.-9 with a hexagonal wrench. 2. Remove the grease fitting from face A and screw into hole face B. 3. In place of the removed fitting, insert the plug into the hole in the face A.
(3) Change Grease Fitting Position to Side Surface To mount the grease fitting on the end cap side face, or on the ball slide face, please consult NSK.
Oil Lubrication Oil piping can be connected to the tapped hole from where the grease fitting was removed. Piping joints are listed on page 13 and page 21. The recommended lubrication oil supply quantity per ball slide per hour Q is given by the following formula, where N is the rail width number.
Q= N (ml/hr) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (5) 150
Grease Fittings for NSK Ball Slides Type
Linear Guide Model #
Grease Fitting Part #
Thread Spec.
Drive A B C
LH15, LS15, LW17 LH,LS 20,25,30,35 Same
L50010000-301 L50000000-001 L50100000-001
Dia. 3mm M6X0.75MM M6X0.75MM
A B
Same plus LW21, 27, 35 LH 45, 55, 65 Same
L50200000-001 L50003000-001 L50103000-001
M6X0.75MM PT 1/8 PT 1/8
C
Same plus LW50
L50203000-001
PT 1/8
Fig.-15 Shape of Grease Fitting
Using LH45 as an example, N=45, and Q= 45 = 0.3(ml/hr)
(1) Applies only to Model No. LH15, LS15 and LW17.
26
NSK Grease Unit Replenish grease to NSK linear guides and ball screws by a manual type hand grease pump. Install the grease in bellows tube to the pump. Several types of grease (80 g) are available.
Grease in a bellows tube
(1) Composition of NSK Grease Unit Components and grease types are shown below.
NSK Grease Unit NSK Grease (80 g in a bellows tube)
Name
(Tube Type)
Reference Number
NSK Grease AS2
(Brown)
NSK GRS AS2
NSK Grease PS2
(Orange)
NSK GRS PS2
NSK Grease LR3
(Green)
NSK GRS LR3
NSK Grease LG2
(Blue)
NSK GRS LG2
NSK Hand Grease Pump Unit NSK Hand Grease Pump (Straight nozzle NSK HGP NZ1 -- One nozzle is provided with the hand pump.)
NSK HGP
Grease nozzle (used with the hand grease pump) NSK straight nozzle
NSK HGP NZ1
NSK chuck nozzle
NSK HGP NZ2
NSK drive fitting nozzle
NSK HGP NZ3
NSK point nozzle
NSK HGP NZ4
NSK flexible nozzle
NSK HGP NZ5
NSK flexible extension pipe
NSK HGP NZ6
NSK straight extension pipe
NSK HGP NZ7
27
(2) NSK Greases (80 g in a bellows tube) Bellows Tube
(3) NSK Manual Grease Pump Unit 1. NSK Hand Grease Pump Unit (Reference Number: NSK HGP)
• Features • Light-weight . . . . . . . . . . . . . . Can be operated by one hand, yet there is no worry to making a mistake. • Inserting by high pressure . . . Insert at 15 Mpa. • No leaking . . . . . . . . . . . . . . . Does not leak when held upside down. • Easy to change grease . . . . . Simply attach the grease in bellows tube. • Remaining grease . . . . . . . . . Can be confirmed through slit on the tube. • Several nozzles . . . . . . . . . . . Five types of nozzles to choose from.
• Specifications • Spout volume . . . . . . . . . . . . 0.35 g/stroke • Mass of main body . . . . . . . . 393 g • Overall length . . . . . . . . . . . . . About 200 mm • Overall width . . . . . . . . . . . . . About 200 mm • Grease tube outer diameter . ø38.1 • Accessory . . . . . . . . . . . . . . . Several nozzles for a unique application can be attached
28
Fig. 2-3 NSK Hand Grease Pump with NSK Straight Nozzle
(2) Nozzles Nozzles that can be attached to NSK Hand Grease Pump Name
Designation Code
Dimensions
Can be used with
NSK straight
Use
NSK HGP NZ1
nozzle
grease fitting A, B, and C under JIS B1575 standard.
Same as above. However, there is no need to
NSK chuck
NSK HGP NZ2
nozzle
press the hand pump because the grease fitting and the nozzle come to contact due to the chucking mechanism at the tip.
NSK fitting
NSK HGP NZ3
nozzle
Dedicated for the - f3 drive-in grease fitting.
Used for linear guides and ball screws which do not have
NSK point
NSK HGP NZ4
nozzle
grease fitting. Supplies grease directly to the ball grooves, or through the opening of ball slide or ball slide to inside. The tip of the flexible
NSK flexible
nozzle is chuck nozzle. NSK HGP NZ5
nozzle
Used to supply grease to the area where hand cannot reach. Flexible extension
NSK flexible
pipe connects the NSK HGP NZ6
extension pipe
the nozzle.
Straight extension
NSK straight extension pipe
grease pump and
pipe connects the NSK HGP NZ7
grease pump and the nozzle.
29
Grease Lubricant for Linear Guides and Ball Screws Type Thickener
Base oil
Base oil kinematic viscosity cSt (40°C)
Range of use temperature (°C)
Purpose
AS2
Lithium type
Mineral oil
130
–10~110
For ball screws and linear guides for general use at high load.
PS2
Lithium type
Synthetic oil + mineral oil
15
–50~110
For ball screws and linear guides for low temperature and high frequency operation.
LR3
Lithium type
Synthetic oil
30
–30~130
For ball screws at high speed, medium load.
LG2
Lithium type
Synthetic oil + synthetic hydrocarbon oil
30
–10~80
For ball screws and linear guides for clean environment.
NF2
Urea composite type
Synthetic oil + mineral oil
27
–40~100
For fretting resistant ball screws and linear guides.
Grease Nozzle Used for NSK Linear Guide Linear guide
Tap hole for
Standard grease
Straight
Chuck
Drive-in
Point
Flexible
model
grease fitting
fitting
nozzle
nozzles (two)
nipple nozzle
nozzle
nozzle
NZ1
NZ
NZ3
NZ4
NZ5
o
o
LS15
ø3
Drive-in type
LS20 ~35
M6 x 0.75
B type
o
LH15
ø3
Drive-in type
LH20 ~35
M6 x 0.75
B type
o
o
o
LH45 ~85
PT1 / 8
B type
o
o
o
LW17
ø3
Drive-in type
LW21 ~35
M6 x 0.75
B type
o
o
LW50
PT/18
B type
o
o
LU09 ~15
-
None
o
LE09 ~15
-
None
o*2)
o
o
*1) LU and LE Series: Apply grease directly to ball groove, etc. using a point nozzle. *2) LS20, LS25, LH20: Use straight nozzle. (Point nozzle tip cannot be used because it interferes with the rail top surface.)
Figures of Grease Fittings
(1) Drive-in type
30
A type
B type
C type
o
o o *2)
Application Sheet Linear Guide – Rail Butting G1 Staggered Rail Butts F Overall Length G3 G4
G2
Line Marks Inside
In order to determine rail butting configuration, please photocopy and complete this form from our catalogue and fax back to NSK. An electronic copy is available please contact our customer service. Quantity: ________________________________
Rail Number: __________________________________
__________________________________________________________________________________________ G1 Dimension: ________________________ mm
G2 Dimension: ____________________________ mm
Note 1: For butting rails only. Note 2: Make sure line marks are inside for Rail Butting. Consists of : __________________________________________
G1=____________ G3=____________
______________________________________________________
G2= ____________ G4=____________
__________________________________________________________________________________________ Company: ________________________________________________________________________________ Contact Name: ____________________________________________________________________________ Telephone: ______________________________
Fax: __________________________________________
Date:
E-Mail: ______________________________________
__________________________________
Remarks: ________________________________________________________________________________
31
K1™ Maintenance-Free Lubrication Unit
The NSK K1™ Lubrication Units distinctive capabilities as a compact and efficient oil-impregnated K1™ Lubrication Unit as well as a seal, greatly increases the performance of the Linear Guide. The K1™ Lubrication Unit is available in two types, one for industrial applications and one for food and medical devices where cleanliness and safety are paramount.
Features: 1. Long-term, maintenance-free usage. In mechanical environments where lubrication is difficult to apply, long-term running efficiency is maintained by using the NSK K1™ Lubrication Units in combination with grease.
2. Prevention of oil-related environmental pollution. In locations where oil greatly affects the environment, or in mechanisms with severe hygiene restrictions, sufficient lubrication is provided using the NSK K1™ Lubrication Unit in combination with grease.
3. Effective in environments where the lubricant is washed away. In facilities where mechanisms are washed down with water, or subject to severe weather conditions, long service life is ensured by using the NSK K1™ Lubrication Unit in combination with grease. Especially effective under hygienic conditions where oil must not be dispersed.
4. Maintains efficiency in dusty environments. In environments where oil and grease-absorbing dust is produced, long-term efficiency is maintained by using the NSK K1™ Lubrication Unit in combination with grease.
32
K1™ Lubrication Unit Identification Number Refer to the following numbering system when ordering.
Example: L A H 30 A N Z - K1 Interchangeable Ball Slide
NSK K1™ Equipped Preload Code
Series Code
(Z: in case of a light preload) Ball Slide Shape Code
Size Number
Interchangeable Linear Guide Dimensions – LH, LS, LW, LU, LE Series Unit: mm Interchangeable Standard Ball slide length Thickness Thickness of Grease fitting Ball Slide Ball slide Ball Slide with two NSK K1™ of NSK K1™ protective cover projection size code form length L V1 V2 N (mm) LAH15
AN
EM GM
55 74
65.6 84.6
4.5
0.8
5
LAH20
AN EM BN GM
69.8 91.8
80.4 102.4
4.5
0.8
14
LAH25
AN/AL EM BN/BL GM
79 107
90.6 118.6
5.0
0.8
14
EM BN/BL GM
85.6 98.6 124.6
97.6 110.6 136.6
5.0
1.0
14
LAH35
AN/AL EM BN/BL GM
109 143
122 156
5.5
1.0
14
LAH45
AN EM BN GM
139 171
154 186
6.5
1.0
15
LAH55
AN EM BN GM
163 201
178 216
6.5
1.0
15
LAH65**
AN EM BN GM
193 253
211 271
8.0
1.0
16
LAS15
AL CL
EL
FL KL
56.8 40.4
66.4 50
4.0
0.8
5
LAS20
AL CL
EL
FL KL
65.2 47.2
75.8 57.8
4.5
0.8
14
LAS25
AL CL
EL
FL KL
81.4 59.4
92 70
4.5
0.8
14
LAS30
AL CL
EL
FL KL
96.4 67.4
108.4 79.4
5.0
1.0
14
LAS35
AL CL
EL
FL KL
108 77
121 90
5.5
1.0
14
LAW17
EL
51.4
61.6
4.5
0.6
5
LAW21
EL
58.8
71.4
5.5
0.8
13
LAW27
EL
74
86.6
5.5
0.8
13
LAW35
EL
108
123
6.5
1.0
13
LAW50
EL
140.6
155.6
6.5
1.0
14
LAU09
AR
TR
30
36.4
2.7
0.5
–
LAU12
AR
TR
35.2
42.2
3.0
0.5
–
43.6
51.8
3.5
0.6
–
LAE09
AR
TR
39.8
46.8
3.0
0.5
–
LAE12
AR
45
53
3.5
0.5
–
LAE15
AR
56.6
66.2
4.0
0.8
–
AN/AL LAH30
LAU15 Note: For more bearing seal options see page 4.
AL
* For Protector and Double Seal Information for LH Series please see page 13. * For Protector and Double Seal Information for LS Series please see page 21.
33
K1™ Lubrication Unit Handling and Assembly Instructions Handling Instructions To maintain the NSK K1™ Lubrication Unit Seal’s high efficiency over a long period of time, please follow these instructions. 1. Permissible temperature range NSK K1™ Lubrication Unit
Max. operating temperature: 50°C (122°F) Max. peak temperature: 80°C (176°F) If not installed immediately, they should be kept refrigerated. Avoid storage in direct sunlight. 2. Never leave the linear guide in close proximity to grease-removing organic solvents such as hexane, thinners, etc. Never immerse the linear guide in kerosene or rust preventative oils which contain kerosene.
Note Other oils such as: water-based cutting oil, oil-based cutting oil, grease (mineral oil-AS2, ester-PS2) present no problems to the K1™ Lubrication Units performance.
Assembly Instructions for the K1™ Lubrication Unit for Linear Guides 1. Slide linear bearing on to the linear rail, using the plastic provisional rail supplied. 2. Remove the grease fitting from the end of the bearing. 3. Remove the Phillips screws (2 pieces). 4. Remove the end seal from end of bearing. 5. Install threaded plug from K1™ Lubrication Unit kit (or see option 9 and 10 depending on application). 6. Install the cover plate from the K1™ Lubrication Unit kit, to the end of bearing, against the end cap. 7. Install K1™ Lubrication Unit without fixing rings, so it can be expanded over the rail. 8. Put the three (3) fixing rings in position on the K1™ Lubrication Unit. 9. Replace the end seal, in front of the K1™ Lubrication Unit. 10. Install connector screw for grease fitting. 11. Replace the grease fitting in connector screw. 12. Install the extension Phillips screws (2 pieces, supplied with the K1™ Lubrication Unit seal kit). Note* The K1™ Lubrication Unit has a shelf life. They should be installed immediately upon receipt. It is important to avoid direct sunlight and extreme heat conditions.
34
Unit Conversions
To Convert From
To
Multiply By
daN
N
10.000
kgf
N
9.81
kgf
lbf
2.205
kgf.cm
lbf.in
0.868
kgf.cm
ozf.in
13.890
kgf.m
lbf.ft
7.234
kgf.m
lbf.in
86.811
N.m
lbf.ft
0.738
mm
inch
0.03937
inch
mm
25.4
For more info
www.npa.nsk.com
35
Worldwide Sales Offices NSK Ltd.-Headquarters, Tokyo, Japan www.nsk.com Americas & Europe Department tel: 03-3779-7120 Asia Marketing & Sales Department tel: 03-3779-7121
Africa
South Africa: NSK South Africa (Pty) Ltd. Johannesburg
Asia and Oceania
tel: (011) 458 3600
Australia: www.nskaustralia.com.au NSK Australia Pty. Ltd. tel: (03) 9764-8302 Melbourne China: NSK Hong Kong Ltd. Hong Kong tel: 2739-9933 Kunshan NSK Co., Ltd. tel: 0520-7305654 Kunshan Guizhou HS NSK Bearings Co., Ltd. tel: 0853-3521505 Anshun NSK (Shanghai) Trading Co., Ltd. tel: 021-62099051 Shanghai NSK representative office tel: 010-6590-8161 Beijing NSK representative office Shanghai tel: 21-6209-9051 NSK representative office tel: 020-8732-0583 Guangzhou NSK representative office tel: 0853-3522522 Anshun India: Rane NASTECH Ltd. Chennai tel: 04114-65313, 65314, 65365, 66002 NSK representative office Chennai tel: 044-4334732 Indonesia: P.T. NSK Bearings Manufacturing Indonesia Jakarta tel: 021-898-0155 Korea: NSK Korea Co., Ltd. Seoul tel: 02-3287-0300 NSK Korea Co., Ltd., Changwon Plant tel: 0551-287-6001 Changwon Malaysia: NSK Bearings (Malaysia) Sdn. Bhd. Kuala Lumpur tel: 03-7958-4396 NSK Micro Precision (M) Sdn. Bhd. Kuala Lumpur tel: 03-961-6288 New Zealand: www.nsk-rhp.co.nz NSK New Zealand Ltd. tel: (09) 276-4992 Auckland
Philippines: NSK representative office Manila tel: 02-759-6246 Singapore: NSK International (Singapore) Pte Ltd. Singapore tel: (65) 273 0357 NSK Singapore (Pte) Ltd. Singapore tel: (65) 278 1711 Taiwan: Taiwan NSK Precision Co., Ltd. Taipei tel: 02-2591-0656 Thailand: NSK Bearings (Thailand) Co., Ltd. Bangkok tel: 02-6412150~58 NSK Safety Technology (Thailand) Co., Ltd. Chonburi tel: (038) 214-317-8 Siam NASTECH Co., Ltd. Chachoengsao tel: (038) 522-343~350
Europe
NSK Europe Ltd. (European Headquarters) www.eu.nsk.com Maidenhead, England tel: 0162-850-9800 France: NSK France S.A. Paris tel: 01 30 57 39 39 Germany: NSK Deutschland Gmbh Düsseldorf tel: 02102-481-0 NSK Steering Systems Europe Ltd. Stuttgart tel: 0771-79082-277 Neuweg Fertigung Gmbh Munderkingen tel: 07393-540 Italy: NSK Italia S.P.A. Milano tel: 02-995-191 Poland: NSK Europe Ltd. Warsaw Liaison Office Warsaw tel: 48-22-645-1525, 1526 NSK Iskra S.A. Kielce tel: 48-41-366-6111 Spain: NSK Spain S.A. Barcelona tel: 93-575-4041
Turkey: NSK Bearings Middle East Trading Co., Ltd. Istanbul tel: 90-216-442-7106 United Kingdom: NSK Bearings Europe Ltd. Peterlee, England tel: 0191-586-6111 NSK UK Ltd. Newark, England tel: 0163-660-5123 NSK Steering Systems Europe Ltd. Coventry, England tel: 024-76-588588
North and South America
NSK Americas, Inc. (American Headquarters) Ann Arbor, Michigan, U.S.A. tel: 734-913-7500 Argentina: NSK Argentina SRL Buenos Aires tel: 011-4762-6556 Brazil: www.br.nsk.com NSK Brasil Ltda. São Paulo tel: 011-3269-4700 Canada: www.ca.nsk.com NSK Canada Inc. Toronto tel: 905-890-0740 Mexico: NSK Rodamientos Mexicana, S.A. de C.V. Mexico City tel: 5-301-2741 United States of America: www.us.nsk.com NSK Corporation Ann Arbor, Michigan tel: 734-913-7500 Sales Offices: Ann Arbor, Michigan tel: 734-913-7500 Santa Fe Springs, California tel: 562-968-1000 NSK American Technical Center Ann Arbor, Michigan tel: 734-913-7500 NSK Precision America, Inc. Franklin, Indiana tel: 317-738-5038 San Jose, California tel: 408-944-9400 NKS Steering Systems America Bennington, Vermont NSK Latin America Inc. Miami, Florida
www.npa.nsk.com tel: 802-442-5448 www.la.nsk.com tel: (305) 477-0605
NSK Ltd. has a basic policy not to export any products or technology designated as controlled items by export-related laws. When exporting the products in this brochure, the laws of the exporting country must be observed. Specifications are subject to change without notice and without any obligation on the part of the manufacturer. Every care has been taken to ensure the accuracy of the data contained in this brochure, but no liability can be accepted for any loss or damage suffered through errors or omissions. We will gratefully acknowledge any additions or corrections.
CAT. No.LG0599C 2007 Printed in Canada ©NSK 2007. The contents of this publication are the copyright of the publishers.